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June 1 1926. 1,586,704

J. D. ROOTS APPARATUS FOR CONTROLLING THE DELIV OF GLASS FROM FURN ACES TO MOLDS AND THE I E Filed Sept. 25 1920 2 Sheets-Sheet 1 IIIIIIII.

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yhta June 1 1926. 1,586,704

J. D. ROOTS APPARATUS FOR CONTROLLING THE DELIVERY OF GLASS FROM FURNACES To MOLDS AND THE LIKE Filed Sept. 25 1920 2 Sheets-Sheet 2 Patented June 1, 1926.

UNITED STATES PATENT OFFICE.

JAMES DENNIS ROOTS, OF LONDON, ENGLAND.

APPARATUS FOR CONTROLLING THE DELIVERY OF GLASS FROM FURNACES TO MOLDS AND THE LIKE.

Application filed September 25, 1920.

The object oi. my invention is to provide a better and simpler method of and means for the control and delivery of 1n0lten glass from a glass furnace or extension thereof for supply to molds andthe like indefinite desired quantities for the manu- :lacture. of articles in glass such as bottles, jars and the like, than has hitherto been devised.

.l'kllfitllel' object of the invention resides in the provision o'lineans for controlling the d ischarge oi by the creation of a vacuum within the furnace or extension thereof, the discharge of glass being broken or stopped during the formation of the vacuum and the glass being discharged when the vacuum is broken.

A further object resides in the provision of aplunger adapted to he il'nmersed in the molten glass, the upward movement of the plunger creating a vacuum within or beneath the plunger to stop the discharge of the glass and the lowering oi. the plunger breaking the vacuum and allowing the discharge of the glass.

i'till another object consists in forming the plunger with an air vent and valve so that air may be ejected from the plunger during; its initial immersion in the molten vision of means for operating the plunger by the operation of the revolving table which carries the glass receiving receptacles, the operation otthe plunger being so timed as to bring a new receptacle beneath the discharge opening for the reception of the upon each downward movement of the plungerv With the above and other objects in view which will appear as the description proreeds, my invention consists in the novel Still a further object resides in the pro- Serial No. 412,747.

stroke, and with means for operating the plunger.

Fig. 2 shows a section with the hollow plunger at the top of its stroke and with a dilierent arrangement for operating the plunger.

A is the furnace extension and B the furnace C is the hollow cylindrical plunger which may be conveniently made in tirebrick or like heat resisting material, the rod (l of which is passed upwardly through the aperture A in the top wall of the extension and is connected outside the extension with the metallic plunger rod 1) which fits within and adapted to slide within the guide E, whichguide is secured on the top of the eX- tension.

lhe plunger rod l) is connected at its upper end by terms of a pin and fork to the lever F which i ulcrinned on the fulcrum pin l The fulcrum pin is carried by the bracket G which is secured to the top inetallic plate o'l' the extension, the other arm of the lever F is pivotally joined to the rod H having a slide thereon H adapted to slide in the guide 1 which is secured to a bracket also mounted upon the top metallic plate of the furnace extension. The joint pin holes in cachend of the lever are slotted to allow oi. the are movement.

A spring J is titted between the bottom oi the guide I and a collar .1 secured to the rod H which spring serves to effect the upward stroke or movement ofthe hollow cylindrical plunger G.

A second guide K provided for the lower end oi the rodH which guide secured by a bracket to the lower metallic plate of the extension A. The bottom end of the rod H is provided with a fork and a roller L of the usual kind adapted to engage the cam bosses or projections upon a ring; cam. M which ring; cam may be secured to the rotating table N. The rotating table oi the usual type or constii'uctiou for carryinp the molds O.

It will be obvious that the number o'l? bossesor projections on the cam ring M should be of the same number as the molds O on the rotating table N.

The plunger 0 in Fig. 1 is shown at the bottom of its stroke. In commencing operation it is convenient to allow the air from the interior of the plunger if there lib") C at oral'iout the top of itsstrolge; lifting the glass away from the neighborhoodi of; the. outletor d scharge aperture-B by means of the said vacuum which I S i'Ol'IHECl OI' tends to be formed within tlrehollow cylindrical.

plunger 0 by lifting same and by the-vie. tt of ssl ss. In g 2- h-. the means for. eti'ecting a variable throw or stroke, when desired oif theplunger-G. The.

rod H? is, jointed at; Q, and; has, only one guide K the. sliding. portion of the rod H? is provided at itslower, QIlQljjT-Tlllll 21 8111111211 fork and roller to thatshownin Fig. 1,,

the single canrboss M? in-this figurebeing shown in section,

The upper end of therod H is provided with a sleeve R- mounted on a fork. H"? formed at the top of the rodl l and adapted to. oscillate therein. The sleeve, is-provided with a set screw R as meansfor-adjustrnent whereby the sleeve R, the set screw R being released may be slid along the lever, arm. F to the required 301 determined position. at a suitable distance from thefulcrum Fl .soas to;-suitably vary-as-desired the stroke oithe plunger 0.,

Thenv it is,desi red to stop the outflow from the discharge-aperture ,Pdu-ring. aninterval, as for example, during'the dinner hour, the pin S may be removed from the,

top the plunger rod, which will allow. the plunger to drop and closethe aperture. 1. preventing outflow therefrom.

From the. abovedetailed description it is thought that the construction-and operation will be clearlyv understood, The glass is adapted to bedischarged intothe recepta, cles 0, carried by; the rotatable table N through the discharge openingin the bot tom of. the extension of the furnace. The

discharge. oi? the glass through the opening is controlled by the reciprocating;plunger C which is operated by the rotationof the lowered the vacuum.w-illbe.broken and the glass allowed to drop by gravity, aided by the pressureoi the lowering of the plunger, through the discharge open-ingot ithe .X-

tension.into, ,the receptacle-O. The. lowen end of the plunger will always be immersed in the molten glass and in order that it may beinitially immersed a discharge passage isprovided through the plunger and plunger rod fortheejection or the air. The up per end of the passage is closed by means of a valve. It will he noted that. the operation of they linger is so timed with the rotation of the revolving table N that a new receptacle wi-lLbe carried; in position to receive the glass upon each downward movement of the plunger. The ordinary shears will be provided. for cutting the. glass and may be operated-fin any. suitable manner such as by; the rotatable table. The cam ring may be detachably connected to, the table so that cam-rings of various curvatures may be used for regulating or adjusting the op eration oi the plunger.

What I do claim as my invention and desire, to: secure by Letters, Patent is:

1: An apparatus of the. character described including a receptac-le for containing molten glass,,saidqreceptacle having a discharge opening t-l1GlGlH,'EL plunger mountedto reciprocate. relative; to the receptacle and forv controlling the discharge of glass through the opening, said plunger including a hollow. stem and an enlarged recessed head, the hollow stem allowing the exhaust of air from the head whereby glass'may be received in the recesso'f the head at all times, and, means for raising and lowering theplunger, said plunger when being raised creating a vacuum to raise the glass and cut oil discharge thereofthrough the openingand' when being lowered discharging the glass through the opening.

An apparatus for delivering glass from an aperture in a, receptacle comprising a plunger immersed in the glass over the aper' ture, means for exhausting the air from the plunger and holding a vacuum therein, and means for reciprocating the plunger.

3. An apparatusfor delivering glass from an aperture in a receptacle con'iprising a plunger having a rod with a passage therethrough and an enlarged head provided in itsunder surface with a recess connnuuieating with the passage in the rod, said enlarged head being positioned over the aperturein the receptacle and its lower edge being immersed in' the glass at all times. means for- .reciprocating the plunger, said means limiting the; downward movement of the plunger sot-hat in its lowermost posi tion the lower edgeof the enlarged head will bespaced "from the bottomof the receptacle, and means. for. creating a vacuum throughthepassage in the plunger rod so that; in g the. upward movement of i the plunger the recess in the enlarged head will rem ain fillcil With; the. glass,

JAMES DENNIS ROOTS. 

